I'm looking for a story which is on AO3, I know its alpha/beta/omega universe, however, I don't know if its one big oneshot or if its got chapters to it.
Steve and Bucky are Alphas and Tony is an omega. All three of them are mates and are happy with it all.
I also know that Tony has a kink where he likes to see his two alphas fighting each other to 'breed' him. Also, at the start of the story, Tony kept quiet about this and only Natasha knew about it. However, Steve and Bucky have noticed that Tony liked watching the pair when they did spar, so, the two alphas constantly try to spar in front of tony and kept looking over to him to see if their omega was watching them.
I know later on the three of them managed to rent or go to a hide out where they started to play with their kinks,especially with Tony's.
Oh, the story also has fanart within it and the story was rated Explicit.l
Like, I'm not sure if its been deleted or not but i can't find it in my bookmarks or anything really.